/ Dictionary / Index B BNA: Meaning and Definition of Find definitions for: BNA Pronunciation: [key] British North America. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Bn. B'nai B'rith Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language